In 2006 there are some experimental solar boats in Hamburg in the city center on a lake. kopf-solardesign.com - solar-electric.com
The following solar boat is just an idea, but the ship isn't for sale as it doesn't exist.
In 2008 in northern Holland (where they have lots of canals and lakes) there is a race between small boats powered by sunlight: www.frisiansolarchallenge.nl
by 2747.com / 2747 / buy / 2006 / solar boat